Answer: 4 moles of ammonia.
Step-by-step explanation:
So you’re trying to make NH 3
from N 2
and H 2
.
In chemistry, that is denoted by the following reaction:
N 2
+ H 2
→ NH 3
But you can’t create or destroy atoms, so you need to have the same number of both of them on the same side.
You have 2 hydrogen atoms on the left and 3 on the right. How can we make both amounts the same? If we try to make 2 NH 3
molecules instead of 1, we have 6 hydrogen atoms in total. 6/2 =3 H 2
. This also means we have 2 nitrogen atoms, so we have balanced the equation.
N 2
+ 3 H 2
→ 2 NH 3
Now comes the fun part. Those numbers in front of the different formulas are the amount of moles that go into the equation. You need 1 mole of nitrogen and 3 moles of hydrogen to make 2 moles of ammonia. If we multiply these numbers by 2, we can also say you need 2 moles of nitrogen and 6 moles of hydrogen to make 4 moles of ammonia. (And you’d have 1 mole of nitrogen left over.)